255563905 has 8 divisors (see below), whose sum is σ = 306919872. Its totient is φ = 204289008.

The previous prime is 255563899. The next prime is 255563911. The reversal of 255563905 is 509365552.

It is a happy number.

255563905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (255563899) and next prime (255563911).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 255563905 - 2³ = 255563897 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13099 + ... + 26128.

It is an arithmetic number, because the mean of its divisors is an integer number (38364984).

Almost surely, 2^255563905 is an apocalyptic number.

It is an amenable number.

255563905 is a deficient number, since it is larger than the sum of its proper divisors (51355967).

255563905 is a wasteful number, since it uses less digits than its factorization.

255563905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40535.

The product of its (nonzero) digits is 202500, while the sum is 40.

The square root of 255563905 is about 15986.3662225035. The cubic root of 255563905 is about 634.5996649955.

The spelling of 255563905 in words is "two hundred fifty-five million, five hundred sixty-three thousand, nine hundred five".